Reinforced i-beam.



H. L. SMITH. BBINFOROED I-BEAM. APPLIOATION FILED MARA, 1910.

da... ...u www? UNITED sTATEs PATENT oEEICE.

n-EEE'EET L. SMITH, or CLINTON, MASSACHUSETTS, AssIcNon To CLINTON wmE CLCTH COMPANY, oEBosToN, MASSACHUSETTS.

REINFORCED I-BEAMI.V

Speolcation of Letters Patent.

Patented May 23, 1911..

Application led March 4, 1910. Serial No. 547,259.

specification.

This invention relates to an improvement in reinforced I-beams.

Figure 1 is a perspective view of an I-beam constructed in accordancewith my invention. Fig. 2 is an end elevation of Fig. 1. Fig. 3 is aside elevation of the same.

As shown, the web 1, of the concrete part of the I-beam has incorporatedin it two sets of longitudinal rods a, b, each set comprising one ormore, according to the length or size of the web. Each flange of theI-.beam is in like mannerprovided with one or more sets of horizontalrods a', a', b', b.

While in the drawings each liange 3, 3, of the I-beam is shown asequipped with two longitudinal rods b', and two longitudinal rods a',this number may be varied to suit the size and style and furtherrequirements of the I-beam. The rodsl a, a at regular intervals are tiedtogether by cross-rods a2, which are electrically welded to the rods a,'a'. In like manner the rods b, b are joined together'by cross-rods b2,electrically welded to the rods b, b', at the points of contact orintersection. v While but one cross-rod b2 is shown in the drawings itis understood .that there are a number of such cross-rods .observed thatthe cross-rods a2, are also welded to the web rods b, whilethecross-rods Z3 are in like manner welded to the web rods a.

4 represents a truss rod, of which there may be any number welded to thecross-rods a, b2, at points of contact or intersection. This truss rodmay be staggered in the form shown in the drawings,` or in' any desiredlway, depending upon the size and style, of the I-beam and therequirements of the particular beam being constructed, it beingunderstood that such truss rod 4 is incorporated in the web 1 of theI-beam, together with the rods a and b and electrically welded to saidrods a and if desired. Further, said truss rod, if desired, may beelectrically welded or bonded to any one of the rods a and b. y

Having thus explained the nature of my invention and described a way ofconstructing and using the same, though without attempting to set forthall of the forms in which it may be made, or all of the modes vof itsuse, what I claim and desire to secure by Letters Patent is:

A reinforced I-beam comprising in its construction two sets oflongitudinal web rods, two separate sets of longitudinal flange rods,two sets of cross-rods, each of which is welded to one set of iangc rodsand to both sets of web rods at the ints of contact or intersection, atruss rod)o extending lengthwise of the web and welded to the cross-rodsat the points of Contact or intersection, and a body of concrete'inclosing the said rods forming therewith a reinforced I-beam.

In testimony whereof I' have aiiixed my signature, in presence oftwo`witnesses.

HERBERT L. SMITH. Witnesses:V

".CHAnLEs MARBERRIE,

PEARL KINNEAE.

